Wireless signal-receiving apparatus



E. C. MIGNON.

WIRELESS SIGNAL RECEIVING APPARATUS.

APPLICATION FILED NOV.29| 1916- 1,329,672. Patented Feb. 3,1920.

INVENTOR E. CMiynOn wrruesses E. C.'M!GNO N.

WIRELESS SIGNAL RECEIVING APPARATUS..

APPLICATION FILED NOV. 29. 1916.

1,329,672. Patented Feb. 3,1920.

4 SHEETS-SHEET 2.

Q Q \Q I i L Y mvzn-roR WITNESSES ATTORNEY E. C. MIGNON.

WIRELESS SIGNAL RECEIVING APPARATUS.

APPLICATlON FILED NOV. 29, 1916.

1,329,672. Patented Feb. 3,1920.

4 SHEETSSHEET 3- INVEHTOR WIT/#55555 E M. 55W W E. c. M|GN'0N.' WIRELESS SIGNAL RECEIVING APPARATUS.

APPLICATION FILED NOV. 29i I9I6- 1,329,672. Patented Feb; 3,1920.

4 SHEETS-SHEET 4 INVENTOR E CMI'gnOn W ZMM 1 useful, vImprovements'in Wireless Signal} Receiving Apparatus; of which vthe follow- 'ing isa specification.

' To all whomit may concern:

v v i 3 r A FlEL M IRA,"*NEjW, YORK;

Be it'known that I, ERNES G. MIGNON, cit zen of the United states residing at E1- inira, in'the county ofCheInung and State of New York, havefinventedicertain new and y .This invention has relation theiwireless transmission ofjradiant energy, an d 'articu-' larly to the reception ofthe same in the form" of telegraph, 5: or telephone signals.

One of the objects of-the invention is] to providea system of this character mbody in au of the necessary and essential signalreceiv ng elements, arranged in proper icon .5

formity to each other, and constitutingfa compact unit of efliciency thathas here tofore'been obtainable'only by the use of:

through induction. 3N a -Another object of the invention isto provide a-lreceiving systernembodying the'au-Q I I i p a ment of associatedinductance 'andica'pacityf .a number of connected, but "spaced in-f i I 'coinphshed b suchnieans as are illustrated struments, to prevent mutualf interference dion type ofdetector and "a novelfarrange- 4 elements, for permitting the production of l 1 so heat oscillations whereby sustained .or unydamped'waves niayqbe received. I j V Another ob'ject f the invention is to pr0- vide in a, 'systern' of the character: above set 5 forth, an] arrangementof inductances, 1 pro viding practicablyg non-leaking 5 magnetic 'fieldsandenabhng the transformation of a maxiinuni amountfof energyif said arrange v v the hook-up?" apparatus.

ment acting to reduce the sensitivity "of the system to variations inthe frequency of the oscillations due to the close proxiinity olojects or the operators body.

Another'ob ect ofthe '1 vention isto pro i' vide a noveland easy manipulatable means associated with the inductance elements of the systenrwherebyj the magnetic fieldsthereof may bei iiiiterlinlged 'to permit Variations' of inductance between- {the elements for the purpose of tuning, altering thesfre v quency ofoscillations in the audion circuit r e i he by 'p m t git induc;

tion.

tances to remain in permanent f xed relap {Another object offthe invention is to pro- I scribed on the paneL The ground wire is. a

vide in. an audion receivinglsystem an elec parts throughout the-several views 1n Figure 1 is 'a perspective View ofthe commy invention.

of the operating mechanism-1].; V e I li e o x WIRELESS SIGNAIi-RECEIViNG API ABATUS.

1 whereby the incoming I oscillations Specification of Letters Patent} 7 Patented'Feb;3 ,'1920L I macaw filedlltoveniber za,19 16. SeriaiiNo." 1 34, 121,. I I. f i i ing therethrough may-besynchronized with w the. local oscillations togjclarify the signals and to generally improve the manifestation thereoffi' s s, Another object of the invention is to "providea cabinetin which all the necessary elcf ments ,arecolnpactly arranged and contained-.1

therein with vapanel providedwith dials;

knobs, switches, etc., operatiye1yassociated with the workin parts within the cabinet whereby manipu ation and relative adjustinent of theelements maybe quicklyand accurately 'obtained from without the cabinet.

@In additionto'the foregoing this'inven- .ti'on coinprehends improvements in the 'details of construction and arrangement of, parts. to be'hereinaft'e'r set'forth and particularlyvpointed out in the appended 'clairns.

1 fThe'aboVe andadditional objects 'are, ac-

inth'ei'r pre e'rredz embodirnent and in the accompanying drawings, wherein like characters of reference denote like or correspond- I so plete device constructed invaccordance; with A i throughfthe cabinetlooking toward the, rear Fig.1 is "a section on; th Fig.2. l

Fig 4; is a diagrammatic ie showing of; the "various parts of the Fig. 5 is" a viewjshowing the fhookeup Tot; 7 the various parts of the apparatus," in-a.

tate an easier understanding of the inven- .tion.

much simpler diagram than Fig.4;to fa'cilia 1 Thel'cabinetvlhisfof a depthsufiicientto V conveniently receive all the elements of they antennae as: indicated by. the character A ine fastened to the binding post 4,' this post also designated the character G onpthe '1 par e12; Thee'eriel-eircuit d, ineliide c l'irg th e hOOk-upQ-hes "its 'terminalecenneeted to the r 'binding'posts 3 and igand, referring-t --Fig. j of the drawing; it will i-be'gs'een thatgthe V 5 aerial posse is in ircuit-with one of the 1 r eleventermiliels of the primary jfifivitdhfi} I Threerfiziteoils fi, 7 and 8 are arranged w lq rra ib iet* h ieer hepa n the relative position of these ceils is signifi cant and is an impertarit f'eture of the" appmmw h se operation Of th 1'5 eieiittb hei d the'icrrespondizig e'il in pacea t q ly .fih ipen i shown yF eo'fjth'e drawing, 'fTenwindirig's ere prois j hbeketl-"up tb the eerrespentiing switeh;

I in}; the fsmhe plane provides it; eeIi'tm-L s'p pf 12 [between the eoils; {the center wh ch iswe'qr'lidlstant fromrtheeenter of' each th 'rm fla fiihthe'wi d ne-fj h P i ary. :"being wired ft the primary switch 5, he: terminelsfin the windings 'f the r ris lldfju ste d 10 9 16 2 d e-: 1 1 f 8 r v eluded. betw 'n' the ip1etes"df. theeoriiiens'er 9 27.1 8? t the :0 rpm-fer teem ie guler" supporting plate" hdconi t tablet vand -longi I irig err, uhlirri'ited degree. Beingi lerig-itudihel ly niove'ble, the she-ft may be move'd thfbugh 7 ri ro w is -eo e "t ward; :errww from the coils a e shown by d9tted1iines'in Fig. 3.

Referring n'ow vgtofizthe aeria1: circuit a, r it s'e'ceiidflfshertwire QGQaIid the-ptirpese '67:"

e er icjlo pj r i lgi egre'esi whereby the j are preperly when teetor "in; the present in-verit h" andespea c l l y the i1 an nprig pe'sitioii up the fyeiiefp serving s'y'ste eeeqe ate with re flrdierifdeteter e 3.0 't l ei' ipl i ty bi i ril i f ma -1 r, i v

15 the aiieibiiyrypezaf; di-f I tub a e i j mwhi isid po i 1- 1100 a clearly Shown, up? in One filament; however, "hes "a freehand exte dingfintc ltheiatmosph reso I that if thflbthef "filament breaks; froinits flfhegridg38;fs connected by meaiie tern'iinaite ejbiiidin'g pest indicated a.t* H;f V h sij har cter b ii g insc ibefl upon gt pal-m1 aa eeefit theretotd idefitifyitheisenie 130' i i in the same rnanner'a binding epost'for" the wing39 and :two posts for the filament j are disposed in proximity to the detector in communication with a variable condenser i 41 through the agency of a conductor 88"?" and this condenser is a duplicate in construction and capacity to the aforedescribed condenser 27 and is likewise adjustedfl'by L means ofa knohAl? upon thefront. of the 42' to thecontact arinhlOl ofithe previously) describedswitch 10 and an extreme contact pole. of said switch is' in electrical com-"- munication with. the uppermost binding posts of the series 25 means of a cone 'ductor43. A pairof binding posts l l and;

45 arelocated u'ponthefr'ont of the panel,"

Y and are ad pted for connection to the negative andpositive iterrninalsrespectively of conductor 50; with one f a pair of binding,

' posts liand 5'2upon -the panel and to which the terminals of the i "phones- 53 o are to 1 be;

connected, theipo st 52 beingiconnectedby a battery which is} not, ,commercially, to

form a partof the cabinet: The battery is, 1 however, indicated inf'dotted :lin'esat LG in thelcliagram and the binding-post 45 isfconnected by means of .a lead 4 7 to the: lower mostrhinding 'post of the series 25. A condu'cto'r 48 extends from the bindingrpost' 4:4 p tothe lowermost binding post and" as the 7 same is directlycomiected byfa conductor is thus coinpleted. e r;

3 e 4911 0116 filalnent terminah the grid irua' The binding aewta aeaae audion detector andtojwhich the wing isconne cted.

is placed ,'in.co1nmunica'tion by Ineansof a i lneans'of alead 54with the pin 3 t whichin turn: isconnected Tofenergi'zlethe: Wing circuit; provide a battery 55"]compr'isin'g twelve three-cell: j flashlight battery ,'.units,'v controlled by I the,

nine terminalfswitch 56, the. lever I travel? jag .ona perfectly smooth surfaceformed"- by. an arcuate strip of fiber 58' through which the terminals 59 project; yThe"highlten'sion battery 5 5 isin series \vith one of the terminals of. the j switchjfvlljwhich connects the nected to thelowerlnost one of the second be provided at 65with one terminal {con- 'nected'to'thef arm'10 of the switch by means of a conductorv66 andthe-other 'ter" r Proximity to permit the hand vofthe'oper-v ater to .travel vfrom I one knob to another, to

'ratus to avoicl confusion, e

the condenser ll and .through the arm 10'.

an" 60ithe wing' cireuit is'jestablished, The 1 arm 57qmay;

- Th v filament circuit includes the filainent battery- 'gl6," shown in the; diagram in dotted. lines, and which may consist of 3V-or f cellsn ojfythe rheo'stat are connected to the contact 5 pin 31 {Ofthfl upper auto transformerwind- 7 h V 7 p ing 30.-by ineansof a lead "63.; Thteopposite anel. The opposite terminalof the con- 3 I denser/l1 is connected bymeans; of a lead terminal'ofl this winding or coil is joined i filament is-inxcircuitwith the negative ter minal tetiof the filamentbattery thus'com;

V pleting the filament circuit; '{For an iob- ,vious purposei I prefer to connect a choke coil 6 4 across the terminal 55 of the battery 55andthe armj57:

s5 A third:condhiseiflsimilal n construci iu l n p city ,to'. condensers 27 31 141 minal to thejpin bindin post of the lower auto vtreuisformer coil ductor-67. 1 Thus it will be seen, .-'that each element of the system having a movable. or; adjustable part is operable from withoutthe cabinetby' e i means of a1knob,j arranged inproper mutual loo arrive at a proper adjustment to 7' correctlyLand clearly receive a signal. j r p A Inuch simpler diagrani than Fig, 4e is 7 shown in Eigpfito enable an easierunden standing of the invention to be had; j In Fig.5, reference-characters,have been ap pliedflonlyto'the main parts th appa; I

In operation,incomingoscillations are re; ceived inftlie aerialcircuit which includes the prim ar ycoil 6 and are induced by said coil 'intothe secondaryteoil 7- ;which is in cluded in the grid circuit. When thecontact arm-ljOis engagedupon anyone of the i i contacts :of theswitch; 10, a circuit is estab fllle' l-ished from; the coil 7 throughsaid contact, a

i through-the conductors 4:3 4:7 and 48- to' the h vfilament of the detector'and from thence secondary coil S-Jby means. of ailead %;v while tlie'lever f.11- ofjthie switch is con to the, grid 38, through; the conductor 38? to.

During" operation of the systeni, thefilanient 4:0 isheated by current fronr the bat-If 1 tery a6iwhich enters thebinding est-44 and ipassesthrough the conductor -48 to the nn- 1 25v 5 nnent; The circuit from theifila nent is then completed through the coil '30 through *the conductor 63 to the rheostat coils 62, and: from thence'through the arm 6lthereofancl conductor '63 :backto the battery? 1 e, adjusted by means of a knob j r 7 57 upon the panel.

so" i ygmeans of a'conf:

back-to the coil lO 12( Y whencs it "crosses thegapwithin the; gen-1b Fromtheforegoing it will 'that[ a*'steady flow of negative el'ecti i"eity,i

traverses the spabeqbetweehithe Wing an and I impinges 111 611 the fhezitefcl' filament.

j The said fi ament? coi-adueits thel curr'eht thibilQ h the leads 49 end 48 t .the 'leid 17 byway of the-binding p sse ms a, metterf W of cdhvenience. Fremiit-he 'lqwermost bi-Iiclef inQ-pds't of the series 25f-theeurrent'is led jthllighias many of the-' fcoils effthe wing 1 circiiip inductance 831s. arefihel'ucled eh v getgelrnent ofgthe'armgll withafiyiohe of the e'ofitacts of theswitch 11. The ebnductoi 55 then completes-the eireu't battery '55. n: I V

The heatihg 0f the electrodesiwithih' "the bulb 37, heats the gasoligfb'edy between 1 these eletrodes "Withih the 'eiafciiated fbillb i midthus ienders thenielecfiles 'ofsilehbody aetiveflnwhieh c'o idition tl'lelbody highly sensitive; {t0 elect ical; oscillatiens i This l body, l jhevef foiind fis still m re" sensitive the filament I of the dtetbr, arid" inlet Well the detector" acts as a; gneratorftq jmggmd local qs'cillzttionsi By adjusting: the

ring l'ii throughi-a' coxhbinetiengo its-two movement'sjthe l difference of frequeniey bei w tween the :tWo,"setsjbf oscillatiqhsifm y be? varied to obtaihth'e imostllei'rable qhality of sigi 'al in the-phne's. 'aAn' "dtq fugfthefelaifify 1 111 general use" andunder, .eigliheryicehditiehsfit willijbe fe 'm'rfl 'sutlieientttof atljustr I the? ring 18 wtof include th'etiwt'r "sece clary through the:

iingj the abs'ehce of incomi -"signals; The ifieolhinge signajh howe er, "willfjeause the where; ffwhereby the impulses will t imparted "therfet l Theleflfe t' w ves". 7 *iirig'orbsgiillations paissi'rig' thl t0' QSyn' hrOni ZIe "with theyIloea l Qthe" gaseousbpdy; withinjthe I I w l y n i ed;by' h c9 1sf 15, so thattheiaudible signals wvill' 'beimore p;

parent pl'arified f to ithefitji elength of the: sendingstatim y v 'wh upbn, the etee a receivej dampedwaves; The cap this eils are 1"( 'pe1'1 r adjusted s6 that-the? grid; cirfc'uitmay be tuned to resenmmewith j'the s ighiilfth eofitact arm: 11," mdybfiibtdj {:Efbm'ene Contact to lanbtherof theswitch 1 1 f'liht'i'll the proper nuinbfoi Coils i' cells as shewji y dottedi' l iri in the "diej therefore, when:reeeivinghndampedI- wetesg e the presence of the operators' bodyfln'proxv disagreeable feature of receiving unclimp'ed kwaves withzt iloos e ou ler. l desire to bell. 'paftifilzifiettentieh tq itheflflat 'fomnatiohj of the ,geoils e-Iid' their felativ lrelatieh' iii the f szimeffilztriewvithftheif edges adj aeeht, I as the be de'cfefzise of mutual inductanc'ei i s duetothis fanengemefit, and a 'primaryhehcl seco dar icoilfiii bei -opemtivelj vassjeiatecl in this 7 fzhahhefwithut lethirheces'sitj of magfietic' COnductbr wIiQs the 18;1

t the filament batterlj r 4'6, interference in thelk known manner the passageo'f aeurreht5 1'ec,- A" tified} fromthe ,ihduced "(iseilhtti'on inigthe-i grid' eircuit from-the filament-Etc thej zciild grid; interrupts the pessztgefjof-fthe, Clli I 'Ql lt I I- in the. wi g circuit Ithrd'ugh thefb ulb' I by such interruptions are tedl" byf i audible sign'uls in 'the"jph61 1es' I :j For thevreceptionfjof 'uhdarhbe I I the capeeities gf and-irate a ufst'eclg" as wellgasjthe' ifi ng.'18 bjfmeans dfthelkrieb' to varyathe 'ml'l'tu'ztlf inductance o fgithe' priimiry afidseeondary' coils 6 Mid p50 lo'cal "b scillatiolis in; the wing cireuit. still further varyin th e. 'adjhstmeflt' otthe' 1 inclu'ctuices and the chpecities, the relativeperid clicity' 6f the incbming the local; I osillations may be a'clj listeds6 "15 "t6 create I 9 a difference of relatiye frequency:whiehfiyilli bef nianifestetl in the'hature (if audible tones iii the phonesfof e ratebf Vibi"atiohs -equ':11' tOf the difference in: frequ'heyiof the incem maghetie'fields by induction fis ai idedflur Icbils 30 and "331% immediately 'beeemeggctiye I frequency-find a strong stlm lie-tic fields 'gerierellylto mitiga v u'ated biiDjJ;

1 T re 1V6: dampediwav'e I I e e i enne ft t s from the. binding-vptistslg z") and ing goil; 0i-

s uitebleeppziifetus thatjmey V begn'eces smtyte tune th'e're'ceiyirig'. appa atus station. I 

